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Finding the Fourth Proportional to 66,967.56, 100,469.88 and 54,456.66

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Solution

The fourth proportional to 66,967.56, 100,469.88 and 54,456.66 is: 81,700.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,967.56 : 100,469.88 = 54,456.66 : x
  2. Step 2: Convert to fraction form
    66,967.56/100,469.88 = 54,456.66/x
  3. Step 3: Cross multiply
    66,967.56x = 100,469.88 × 54,456.66
  4. Step 4: Simplify right side
    66,967.56x = 5,471,254,095.40
  5. Step 5: Solve for x
    x = 5,471,254,095.40/66,967.56
  6. Step 6: Final answer
    x = 81,700.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.